 |
multiple course
| surface treatment
| multiple courses | |
| avia. | 多 航向 |
| surface treatment | |
| eng.geol. | 路面处理 |
| environ. | 表面处理 |
| met. | 表面处理 |
| |||
| 多无线电指向标航向 | |||
| multiple course: 5 phrases in 2 subjects |
| General | 1 |
| Technology | 4 |
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